US8690622B2 - Small size floating vessel using a dual fuel system - Google Patents
Small size floating vessel using a dual fuel system Download PDFInfo
- Publication number
- US8690622B2 US8690622B2 US13/231,742 US201113231742A US8690622B2 US 8690622 B2 US8690622 B2 US 8690622B2 US 201113231742 A US201113231742 A US 201113231742A US 8690622 B2 US8690622 B2 US 8690622B2
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- natural gas
- diesel fuel
- deck
- floating vessel
- small size
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/21—Control means for engine or transmission, specially adapted for use on marine vessels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
- B63B17/0036—Arrangements for minimizing pollution by accidents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
Definitions
- the present embodiments generally relate to a small size self-propelled floating vessel having an on-board dual fuel system, azimuthing thrusters, and an overall length ranging from sixty meters to one hundred seventy meters.
- FIG. 1 depicts an outboard profile of the floating vessel according to one or more embodiments.
- FIG. 2A depicts an inboard profile of the floating vessel with a natural gas tank below the deck according to one or more embodiments.
- FIG. 2B depicts a main deck plan of the floating vessel of FIG. 2A according to one or more embodiments.
- FIG. 3A depicts an inboard profile of the floating vessel with the natural gas tank below the deck and superstructure according to one or more embodiments.
- FIG. 3B depicts a main deck plan of the floating vessel of FIG. 3A according to one or more embodiments.
- FIG. 4A depicts an inboard profile of the floating vessel with the natural gas tank within the superstructure according to one or more embodiments.
- FIG. 4B depicts a main deck plan of the floating vessel of FIG. 4A according to one or more embodiments.
- FIG. 5 depicts a hold plan of the floating vessel according to one or more embodiments.
- FIG. 6 depicts a diagram of an emission early warning alarm system usable with the floating vessel according to one or more embodiments.
- FIG. 7 depicts a chart showing fuel capacity for different embodiments of the floating vessel according to one or more embodiments.
- the present embodiments relate to a floating vessel using a dual fuel system, which can include diesel fuel and natural gas.
- the floating vessel can be a small size floating vessel.
- the floating vessel can be an offshore supply vessel for servicing and resupplying offshore drilling facilities.
- the floating vessel can have options for selectively operating on either diesel fuel or natural gas. Selective operation on diesel fuel or natural gas can allow a captain of the floating vessel to maximize the range of vessel operation where possible, and to operate with reduced vessel emissions of nitrogen oxides and particulates where required.
- the floating vessel can operate on natural gas to provide for lower emissions, such as when the floating vessel enters reduced emission zones.
- the floating vessel can convert to operating on diesel fuel to maximize the operating range and flexibility of the floating vessel, such as when the floating vessel is outside of the reduced emission zones.
- the reduced emission zones can be areas where governmental regulations require reduced emissions from the floating vessel.
- the floating vessel can have an optimized cargo capacity that, for a given range, can carry more cargo than other conventional supply vessels.
- the floating vessel can have a hull with port and starboard sides, bow, and stern.
- the hull can be a monohull or a catamaran hull supported on two pontoons.
- the monohull can have a full load displacement of up to about 32,000 metric tonnes.
- the monohull can have an overall length ranging from about 60 meters to about 170 meters, and a draft up to about 10 meters.
- the hull can have a hull speed ranging from about 11 knots to about 17 knots.
- the stern can be tapered, and can rise from a waterline of the floating vessel.
- the hull can also have a bulbous bow, which can increase fuel efficiency of the floating vessel.
- a deck also referred to as the main deck, can be disposed over the hull.
- the deck can be made of steel, and have a thickness ranging from about 9.5 millimeters to about 12 millimeters.
- a superstructure can be formed or disposed over the deck.
- the superstructure can be a single or multi-level structure having a pilot house, which can contain a navigation system.
- the superstructure can have one or more crew quarters, which can be disposed on a first and/or second level of the superstructure.
- the crew quarters can provide an area for the crew to sleep, eat, engage in personal hygiene, and the like.
- the crew quarters can have a vacuum flush toilet, related sanitation systems, and the like.
- the superstructure can include cooking facilities, storage for food, gear, and other materials.
- Potable drinking water tanks and reverse osmosis equipment for providing drinking water to the crew can be disposed below the deck.
- the superstructure can support a minimum of a life raft/lifeboat from davits as required by regulations.
- the hull can support a bunkering station, which can be disposed above or below the deck.
- the bunkering station can be used to bunker diesel fuel and natural gas for use in powering the floating vessel.
- the floating vessel can have at least one natural gas tank, which can be connected to the bunkering station and can contain natural gas for powering the floating vessel.
- the natural gas can be liquefied natural gas or compressed natural gas.
- the natural gas can be maintained at a pressure ranging from about 1 atmosphere to about 11 atmospheres, and a temperature ranging from about ⁇ 180 degrees Celsius to about ⁇ 150 degrees Celsius.
- the at least one natural gas tank can be disposed within the superstructure and above the deck, beneath the deck, or beneath the deck and beneath the superstructure.
- the volume of the natural gas tank can range from about 100 cubic meters to about 1200 cubic meters.
- the floating vessel can include a plurality of diesel fuel storage tanks, which can be mounted below the deck and connected to the bunkering station.
- the diesel fuel storage tanks can be used to store diesel fuel.
- the volume of the diesel fuel storage tanks can range from about 50 cubic meters to about 1900 cubic meters.
- the floating vessel can include a plurality of diesel fuel day tanks, which can contain diesel fuel.
- the diesel fuel day tanks can be mounted above the deck and connected to the diesel fuel storage tanks.
- the volume of the diesel fuel day tanks can range from about 50 cubic meters to about 100 cubic meters.
- the diesel fuel can be marine diesel fuel, which can be in compliance with the fuel standards of the United States, such as ASTM D975 as of the year 2011, ASTM D2069 as of the year 1998, and international standards, such as ISO 8217 as of the year 2010.
- the floating vessel can have a propulsion system, which can be connected to the diesel fuel day tanks and the navigation system.
- the propulsion system can be adapted to selectively switch between receiving natural gas from the at least one natural gas tank and receiving diesel fuel from the diesel fuel day tanks.
- the propulsion system can selectively switch between receiving natural gas from the at least one natural gas tank and receiving diesel fuel from the diesel fuel day tanks in less than 3 minutes.
- the propulsion system can include at least one dual fuel engine disposed on the deck, at least one electrical power supply disposed on the deck and connected to the at least one duel fuel engine, power transmission equipment connected to each electrical power supply, and at least one azimuthing thruster extending through the hull and powered by the power transmission equipment.
- the floating vessel can have from about three to about six electrical power supplies connected with about three to about six dual fuel engines.
- Having the duel fuel engine located on or above the deck can allow the floating vessel to maximize cargo capacity within the hull.
- One or more embodiments of the floating vessel can have a global positioning system connected to the navigation system.
- a processor with a data storage can be connected to the global positioning system.
- the data storage can have computer instructions to compare an actual location of the small size floating vessel as determined by the global positioning system to stored locations where emissions must be reduced, and to generate at least one alarm when the actual location is at a stored location where emissions must be reduced.
- the processor and the data storage can generate the alarm.
- the data storage can have computer instructions to transmit the alarm to a client device to advise a captain to switch from diesel fuel to natural gas to minimize vessel emissions.
- the floating vessel can have a dynamic positioning system connected to the global positioning system, a laser reference system, an acoustic reference systems, or combinations thereof.
- the dynamic positioning system can provide commands to the propulsion system to maintain the floating vessel at one location, one heading, or combinations thereof in response to weather and current.
- FIG. 1 depicts an embodiment of an outboard profile of the floating vessel 10 according to one or more embodiments.
- One or more embodiments of the floating vessel 10 can have an overall length of about 302 feet and a beam of about 64 feet.
- the floating vessel 10 can have a hull 12 .
- the hull 12 can have a depth of about 24 feet and 6 inches, and a loadline draft of about 19 feet and 6 inches.
- the hull 12 can have a waterline 40 and a bulbous bow 42 for increasing fuel efficiency.
- the floating vessel 10 can have a stern 38 and at least one azimuthing thruster 34 .
- the stern 38 can rise from a keel of the floating vessel 10 while maintaining at least a portion of the stern 38 below the waterline 40 .
- the floating vessel 10 can have a deck 14 disposed over the hull 12 .
- the floating vessel 10 can have a superstructure 16 with a top deck for housing crew quarters 20 .
- the floating vessel 10 can have a bunkering station 21 external to the superstructure 16 .
- the superstructure 16 can have a main deck disposed at about 24 feet and 6 inches from the keel, a focsle deck disposed at about 41 feet and 5 inches above the keel, a first deck “01 deck” at about 50 feet above the keel, an electronics deck at about 59 feet above the keel, a void deck at about 63 feet above the keel, a pilothouse top deck at about 72 feet above the keel, and a mast base at about 80 feet above the keel.
- FIG. 2A depicts an inboard profile of the floating vessel 10 with a natural gas tank 22 a disposed below the deck 14 without being directly below the superstructure
- FIG. 2B depicts a main deck plan of the floating vessel 10 of FIG. 2A .
- the deck 14 can be configured to carry cargo.
- the natural gas tank 22 a can contain a liquefied natural gas for operating the floating vessel 10 .
- the natural gas tank 22 a can be disposed beneath the deck 14 and adjacent a bulk mud compressor 54 , which can also be beneath the deck 14 .
- the floating vessel 10 can have power transmission equipment 32 disposed above the deck 14 and within the superstructure, such as between a main deck and foscle deck.
- the floating vessel 10 can have diesel fuel day tanks 25 a and 25 b disposed above the deck 14 and within the superstructure.
- the diesel fuel day tanks 25 a and 25 b can be disposed adjacent one or more dual fuel engines 28 a and 28 c , which can be connected to one or more electrical power supplies 30 a and 30 d disposed above a main deck.
- the one or more dual fuel engines 28 a and 28 c can each be connected with one of the electrical power supplies 30 a and 30 c , such as a generator.
- the electrical power supplies 30 a and 30 c can be Wartsila generators configured to produce 2510 kilowatts at 720 revolutions per minute.
- the total kilowatts that can be produced by the electrical power supplies 30 a and 30 c can be 7530 kilowatts at 690 volts AC.
- the power transmission equipment 32 can be power transmission equipment available from Wartsila of Finland, and can be configured to operate seamlessly with the electrical power supplies 30 a and 30 c and the propulsion system of the floating vessel 10 .
- the dual fuel engines 28 a and 28 c of the floating vessel 10 can selectively operate on liquefied natural gas from the natural gas tank 22 a or on diesel fuel from the diesel fuel day tanks 25 a and 25 b.
- the floating vessel 10 can have tanks configured to contain about 585,000 gallons of water ballast, about 255,000 gallons of diesel fuel, about 67,000 gallons of liquefied natural gas, and about 17,000 gallons of fresh water.
- the floating vessel 10 can be configured to carry about 14,870 barrels of liquid mud, about 1000 barrels of methanol, and about 10,250 cubic feet of dry bulk, such as drilling cement, as cargo.
- One or more embodiments of the floating vessel 10 can include climate control equipment, which can be adjacent the power transmission equipment 32 and within the superstructure.
- the navigation system 18 can be disposed within the pilothouse of the superstructure, and can be connected with the global positioning system 44 .
- a processor 46 and a dynamic positioning system 64 can also be connected with the global positioning system 44 .
- the dynamic positioning system 64 can be connected with a laser reference system 65 and a acoustic reference system 67 for holding the floating vessel 10 at one location, one heading, or combinations thereof.
- the azimuthing thrusters 34 can be disposed proximate the stern 38 and below the waterline 40 .
- the azimuthing thrusters 34 can be ones available from Wartsilla.
- the azimuthing thrusters 34 can be connected to a portion of the propulsion system, such as, in a z-drive compartment adjacent the stern 38 .
- the azimuthing thrusters 34 can operate on 2700 kilowatts, 690 volt AC, at 1200 revolutions per minute to provide 7241 horsepower with a fixed pitch variable frequency drive in a nozzle.
- the floating vessel 10 can also have twin bow thrusters 60 and 62 for positioning the floating vessel 10 .
- the twin bow thrusters 60 and 62 can each provide 1280 kilowatts, 690 volt AC, at 890 revolutions per minutes for a total of 3433 horse power.
- the twin bow thrusters 60 and 62 can have a fixed pitch variable frequency drive with reversing motors.
- the floating vessel 10 can have one or more fire monitors configured for remote control.
- FIG. 3A depicts another embodiment of an inboard profile of the floating vessel 10
- FIG. 3B depicts a main deck plan of the floating vessel 10 of FIG. 3A .
- the natural gas tank 22 b can be disposed below the deck 14 and below the superstructure.
- the dynamic positioning system 64 can be connected with the laser reference system 65 and the acoustic reference system 67 .
- FIG. 4A depicts another embodiment of an inboard profile of the floating vessel 10
- FIG. 4B depicts a main deck plan of the floating vessel 10 of FIG. 4A .
- the natural gas tank 22 c can be disposed above the deck 14 and within the superstructure.
- FIG. 5 depicts a hold plan of the floating vessel 10 , two azimuthing thrusters 34 a and 34 b proximate the stern 38 .
- the floating vessel 10 can have cargo space 36 a , 36 b , 36 c , and 36 d within the cargo hold.
- the floating vessel 10 can have diesel fuel storage tanks 24 a , 24 b , 24 c and 24 d , which can connect to the bunkering station.
- FIG. 6 depicts an embodiment of an emission early warning alarm system usable with the floating vessel 10 according to one or more embodiments.
- the navigation system 18 can be in communication with the global positioning system 44 .
- the global positioning system 44 can be in communication with the processor 46 , which can be in communication with a data storage 47 .
- the data storage 47 can be in communication with a client device 54 .
- a captain 52 of the floating vessel can have the client device 54 for monitoring the emission early warning alarm system.
- the client device 54 can be any networked communication interface device, such as a laptop, cellular phone, or vessel alarm system.
- the client device 54 can be provided with alerts or alarms from the data storage 47 , such as through the global positioning system 44 .
- the navigation system 18 can provide the processor 46 and data storage 47 with navigation data to allow the processor 46 and data storage 47 to determine whether or not to initiate an alarm.
- the data storage 47 can have computer instructions to compare an actual location of the small size floating vessel as determined by the global positioning system to stored locations where emissions must be reduced, and to generate at least one alarm when the actual location is at a stored location where emissions must be reduced 48 .
- the processor 46 and the data storage 47 can generate the alarm.
- the data storage 47 can have computer instructions to transmit the alarm to a client device to advise a captain to switch from diesel fuel to natural gas to minimize vessel emissions 50 .
- the floating vessel can selectively operate on diesel fuel or natural gas depending upon the location of the floating vessel as determined by the global positioning system 44 and the navigation system 18 .
- FIG. 7 depicts a chart showing fuel capacity of three floating vessels, including floating vessel 10 a with an overall length of 60 meters, floating vessel 10 b with an overall length of 90 meters, and floating vessel 10 c with an overall length of 170 meters.
- floating vessel 10 a can have an above deck diesel fuel capacity of about 50 cubic meters with the diesel fuel day tanks disposed above the deck
- floating vessel 10 b can have an above deck diesel fuel capacity of about 75 cubic meters with the diesel fuel day tanks disposed above the deck
- floating vessel 10 c can have an above deck diesel fuel capacity of about 100 cubic meters with the diesel fuel day tanks disposed above the deck.
- a below deck diesel fuel capacity 11 b of the floating vessels 10 a , 10 b and 10 c with the diesel fuel day tanks disposed below the deck is charted.
- the floating vessel 10 a can have a below deck diesel fuel capacity ranging from about 50 cubic meters to about 350 cubic meters with the diesel fuel day tanks disposed below the deck
- floating vessel 10 b can have a below deck diesel fuel capacity ranging from about 100 cubic meters to about 925 cubic meters with the diesel fuel day tanks disposed below the deck
- floating vessel 10 c can have a below deck diesel fuel capacity ranging from about 200 cubic meters to about 1900 cubic meters with the diesel fuel day tanks disposed below the deck.
- a below deck natural gas capacity 13 a of the floating vessels 10 a , 10 b and 10 c with the natural gas tanks disposed below the deck is charted.
- the floating vessel 10 a can have a below deck natural gas capacity ranging from about 50 cubic meters to about 100 cubic meters with the natural gas tanks disposed below the deck
- floating vessel 10 b can have a below deck natural gas capacity ranging from about 50 cubic meters to about 800 cubic meters with the natural gas tanks disposed below the deck
- floating vessel 10 c can have a below deck natural gas capacity ranging from about 100 cubic meters to about 1200 cubic meters with the natural gas tanks disposed below the deck.
- a superstructure natural gas capacity 13 b of the floating vessels 10 a , 10 b and 10 c with the natural gas tanks disposed in the superstructure is charted.
- the floating vessel 10 a can have a superstructure natural gas capacity ranging from about 50 cubic meters to about 100 cubic meters with the natural gas tanks disposed in the superstructure
- floating vessel 10 b can have a superstructure natural gas capacity ranging from about 50 cubic meters to about 100 cubic meters with the natural gas tanks disposed in the superstructure
- floating vessel 10 c can have a superstructure natural gas capacity ranging from about 200 cubic meters to about 300 cubic meters with the natural gas tanks disposed in the superstructure.
- the fuel storage capacities of the floating vessels 10 a , 10 b and 10 c can be configured to maximize the fuel range and economic range of the floating vessels 10 a , 10 b and 10 c , while enabling the floating vessels 10 a , 10 b and 10 c to provide for maximum cargo capacity.
- the ability to convert to using natural gas can provide for a reduction in emissions, such as in emission controlled coastal areas.
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Priority Applications (1)
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US13/231,742 US8690622B2 (en) | 2011-09-13 | 2011-09-13 | Small size floating vessel using a dual fuel system |
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US13/231,742 US8690622B2 (en) | 2011-09-13 | 2011-09-13 | Small size floating vessel using a dual fuel system |
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US20130065461A1 US20130065461A1 (en) | 2013-03-14 |
US8690622B2 true US8690622B2 (en) | 2014-04-08 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180312235A1 (en) * | 2015-10-26 | 2018-11-01 | Keppel Offshore & Marine Technology Centre Pte Ltd | An arrangement of cryogenic containers for lng or cng on a deck of a tugboat |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD741778S1 (en) * | 2013-04-12 | 2015-10-27 | Fincantieri S.P.A. | Fore part of a drilling ship |
USD751970S1 (en) * | 2014-04-24 | 2016-03-22 | Fincantieri S.P.A. | Drillship |
JP7193250B2 (en) * | 2018-04-24 | 2022-12-20 | 佐々木造船株式会社 | vessel |
CN114802685B (en) * | 2022-04-28 | 2023-06-27 | 广船国际有限公司 | Dual-fuel control system and control method for ship |
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US20120252285A1 (en) * | 2009-10-16 | 2012-10-04 | Daewoo Shipbuilding & Marine Engineering Co., Ltd. | Ship capable of running selectively with liquefied fuel gas main drive engine and liquefied fuel gas generator engine |
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US6095101A (en) * | 1997-01-29 | 2000-08-01 | Man B&W Diesel A/S | Internal combustion engine of the diesel type for combustion of gas, and a method of supplying such an engine with fuel |
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US20120108116A1 (en) * | 2009-07-06 | 2012-05-03 | Ihi Marine United Inc. | Gas-fired superconductive electrically propelled ship |
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US20180312235A1 (en) * | 2015-10-26 | 2018-11-01 | Keppel Offshore & Marine Technology Centre Pte Ltd | An arrangement of cryogenic containers for lng or cng on a deck of a tugboat |
US10625840B2 (en) * | 2015-10-26 | 2020-04-21 | Keppel Offshore & Marine Technology Centre Pte Ltd | Arrangement of cryogenic containers for LNG or CNG on a deck of a tugboat |
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US20130065461A1 (en) | 2013-03-14 |
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